【摘要】 目前我国大多数半挂车应急制动、驻车制动存在一些不尽人意之处，为使其有效可靠，以典型的双管路制动系为例，介绍了四种类型半挂车应急制动、驻车制动的设计角理。更多还原

【Abstract】 Emergency braking and parking braking of semitrailer manufactured in our country are not Perfect mostly. For this reason, this paper took typical dual-circuit braking system for example and recommended the design principles of four kinds emergency braking and parking braking of semitrailer.更多还原